Home / 21,783.23-32,679.10-6,991.01

Finding the Fourth Proportional to 21,783.23, 32,679.10 and 6,991.01

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Solution

The fourth proportional to 21,783.23, 32,679.10 and 6,991.01 is: 10,487.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,783.23 : 32,679.10 = 6,991.01 : x
  2. Step 2: Convert to fraction form
    21,783.23/32,679.10 = 6,991.01/x
  3. Step 3: Cross multiply
    21,783.23x = 32,679.10 × 6,991.01
  4. Step 4: Simplify right side
    21,783.23x = 228,459,914.89
  5. Step 5: Solve for x
    x = 228,459,914.89/21,783.23
  6. Step 6: Final answer
    x = 10,487.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.